Tractor sweep rake



Sept. 24, 1929. l Q PEARS 3N V TRACTOR SWEEP RAKE 7 vSheets-Sheetl FiledFeb. 19, 1927 sept. 24, 1929.

c. vPEARSQN TRACTOR swEEP RAKE y '7 Sheets-Sheet j 2 Filed Feb. i9. 1927I y di@ SNN Sept. 24, 1929. c. PEARsoN u TRACTOR SWEEP BAKE v Filed Feb.19, 1927 7 sheets-sheet l5 Maggie/w50@ c. PEARsoN I TRACTOR SWEEPRAKESept. 24, 1929.

' Filed Feb. 19, 1927 sept. 24, 1929.

C. PEARSON TRACTOR SWEEP BAKE Filed Feb. 19, 1927 7 Sheets-:Sheet 5 C.PEARSON TRACTOR SWEEP RAKE sept. 24, 1929.

Filed Feb; 19. 1927 '7 sheets-sheet sept; 24, 1929. C, PEARSON y1,729,084

TRACTOR SWEEP BAKE Filed Feb. 19, 1927' 7 Sheets-Sheet ,7

Iwan/2730?. Cf/wfleljeafw Patenteasept. 24, 1929 Uhuru!)l .STA

CHARLES PEAns'oN, or cHIcAGo, f l u VESTER COMPANY,

ILLINOIS, ASSIGNOR TO INTERNATIONAL HAR- -A CORPORATION OF NEW JERSEYTRACTOR SWEEP BAKE Application led February 19 192,7. Serial No.169,459.

This invention I relates generally to hay `harvesting machines andspecifically to a machine of the sweep rake type,

for use in sweeping or gathering windrows and cocks of hay ir a fieldand transporting such loads, usually to a stacking machin-e for buildingthe hay into a field storage.' stack.

Such machines 'are usually operated by draft animals. Recently,

the tendency has been to construct these machines in such manner' as toadapt them for use as an attachment for,- or in combination withtractors; thus substituting motive mal powerxin thelr operation.

of the present 1n'vent1on -Y operated type.

power for ani- The machine -is -of this tractor from'a tractor, with aminimum of labor;

to provide such agmachine in which the rake head is supported onsteerable wheels, which are connected with the steering means of thethatthe tractor and steered conjointly; to protractor in such a mannersweep rake Vare vide a novel and efficient adjusting mechanism,-whichwill permit the Vrake teeth yieldin gly l during or floatingly tocontact the ground the raking operation; to

provide a lmanually operable adjusting means for raising the rake head;

to bprovide lifting means for the rake head which is actuated bythemovement of the tractor; and, lastly, to provide a tractor sweep rake,

control. Other object ent to those skilled in this art tion of themachine continues.

j which is practi- ,cable and has simple and efficient. means of' willmake themselves apparas the descrip- Briefly considered, the improvedmachine of this invention comprises a frame, 4the rear end of which isadapted to, and detachment .45 ture of a tractor, said frame wardlyalongside the tractor,

for easy attachment from the real-,axle strucextending forand pivotallycarrying at the front end thereof, forwardly of the tractor, a rake headsupported on a pair.

. of spaced, steerable wheels. 59 seen that -the rake is pushed It willthus be by the tractor.

. on the tractor.

, this invention may assume 1n practice,

` tion, of the same mechanism The steering means of the tractor isarticulated with these rake supporting wheels, so that the tractor andrake-may be steered together by the operator. from a single control`Novel, detachable` connections' are also provided for connectinr theforward part ofthe rake to the forward part of the tractor. A 'novelmanually-operable Y lever mechanism is carried on the rake frame in aposition accessible -to an operator on the 60, seat of the tractor, foradjustingthe rake head. Means is also provided to permit this adjustmentto be power effected by the movement of 'the tractor, independently ofthe manually actuated adjusting 'control means. 65

These control connections are'so constructed that the raking platformmay oatingly ride the ground when gatheringor sweeping hay. Referring tothe accompanying sheets of drawings illustrating-one embodiment which470 it will be seen thatj Figure 1 is a tp l'an view of the sweep rakeof-this invention attached to a tractor,

'the steering and 'various adjusting lcontrols 75 generally shown;

2 is a side elevational view of the sweep rake attached to the tractor;Figure?) is a rear perspective view of the rake head, showing thearticulated connec- 80 tion from the tractor` steering means to the rakesteering means;

Figure 4 is a rear perspective view, showing the frame mounting at therear of the being l Figure tractor and the control mechanism forpermitting power adjustment of the rake head; Figure 5 is a rearelevational View, partly in section, the left hand end being incomplete`for the sake of clearnessv, showing the means for connecting the rakeframe to the rear of o the tractor, and the control means forperwfmitting power adjustment ot the rakehead;

plan view, partly in secshown in Figure `5, the' left hand end, however,beingI com- 95 pleted; f Y

Figure 7 is a view similar to Figure 5, showing the structure withcertain parts left out for the sake of clearness ;l l l Figure 8 is asectional view `of adetail, as 100 Figure 6 1s a top seen along the line8-8 of Figure 7, viewed in the direction of the arrows;

Figure'9 is a detail, rearelevational, View of one of tlie rake headsupporting and steer ing wheels, as seen along vthe line 9 9 of F igure1f, when viewed in the directionof the arrows;

Figure 10 isa side elevational, detail View, showing the extreme forwardposition the parts of Figures and 6 assume, when the f rake head is inits ground engaging position; Figure l1 1s a view similar to `igure 10,

but showing these parts inthe extreme rearyward positions they assume,when the rake head is raised above the ground;

Figure 12 is a simila1'vie` but showing these. parts in the intermediateposition they assume when the head is being lifted;

Figure 13 is a side elevational, 'detail view, partly in section,showing the means for detachably connecting the main frame members ofthe rake to the rear of the tractor ;v and` Figures 14 tand 15' are,respectively, plan steering structure and side detail views'of the onthe tractor, to which' the steering means for the sweep rake isdetachably connected.

The tractor,

with which the sweep rane of this invention is herein associated,comprises a longitudinally disposed, 4narrow mainframe 15, the rear endof which is mounted on an' arched rear axle structure (see Figures 1, 2and 4) lembodying a transverse housing and support 16, and depending endhousi' gs 17. The housing 16-enclo`ses a diferen tial transmissionmechanism and the housings 17l enclose gearing for; operating stubaxles,

not shown, which are A carried in and drive the rear traction wheels 18.,The forwardend o f the frame 15 is `connected to a transverse bolster19, (see Figures 1, 2 and 3)', which ybolster centrally carries anupright housing 20, in which is journaled for rotation, a verticalsteering spindle 21, said spindle extendy ing downwardly. through thebolster. f Beneath vthe `frame 15, the spindle-is connected to a fronttractor supporting and steering wheel truck 22. i

. `As seenin, Figure 2, the upperA end of the spindle 21 has fastthereon a quadrantaPg/ear 23, meshing witha pinion 24, turned by a gear25, lixed on a shaft 26, supported suitable bearings above the tractorframe,`on supports 27. The rear endof this longitudinally disofshaft 32,(see Figure 4).l Looking at Figures 1, 3, 14 and 15, it will be controlhand wheel 28,

posed 'shaft' 26 is provided adjacent the operators station on a seat29, carried on the transverse housing 16. The tractor frame carries anengine. and a transmission housing 31, ronr which. rearwardly Frotrudesbeneath the frame, a' longitudlna l y disposed power takeseen that thevertical steering spindle 21 of the tractor carries loosely thereon, Yasleeve 33 formed with an arm 34, said arm having a with a` steeringcomplete description of this structure,` atten.- tion is directed totheprior patent to Benvjamin et al. No. 1,539,108 of May 26,1925.

The purposeafd function of the structure parent.' A

The rear end of the tractor,

(see Figures 1, 2 and 4), is provided with a U--shaped draft bar 40,each leg of which is' bolted to a bracket 41, the brackets in turn beingpivotally connectedat 42 to the lower ends of-the depending housings 17.Adjustable nect the bar to theupper ends of the housings 17, as shown at44. This draft bar' forms animportant part of therear axle structure,

l just briefly described will later be made aphangers 43 conas itfunctions as a cross brace to strengthen the lower ends of the housings17.

' The main frame and rake head of the sweep rake attachment will 'nextbe described, (see, Figures'l, 2.and v3); The main rakey frame comprisesa pair of side members 45, which are adapted to be arrangedlongitudinally on opposite sides of the tractor. These members aresupportedbyand connected to the rear end of the tractor in a mannersubsequently to be described. These members,

when -in working position, extend slightlyy 'l forwardly ofthetransverse plane in whichthe front end of the wheel truck22 lies, as

seen in Figure 1, where they are pivotally connected to brackets y46,`rigidly connected to al transverse, rear rake head bar 47. This vbar 4isof lconsiderable length andextends a substantial distance beyond eachside of the tractor, as shown. This bar 47 carries adja- .cent each endaforwardly and longitudinally of which is rigidly extending bar 48, eachconnected to a secondtransverse rake head bar'49. Connected to each ofthe transverse rake head bars, at spaced intervals,A are the .usualraking tines'50, which extend for-A wardly, as shown, a substantialdistance. It is here to be noted that the bars 48 extend rearwardlya-short distance back of the first rake head bar 47. The rear free endsof these bars 48 carry 'upright rods 48,'each of which receives at itsupper end one end of a chain 51, the other ends of the chains beingadapted for detachableeonnection to implement coupling brackets52 at theends of the lfront tractor bolster. These brackets are formed as in thepatent heretofore mentionedv with `upper and lower sockets which in thiscase receive a detachable clamping' attaching means 53, lto which thechains are fastened. The purpose of these ,chains will later appear.`Looking at Figures 1, 3, and particularly Figure 9, it can be seenthat'a relatively short transverse bar 54 is arranged on the headbetweenthe bars 47 and, 49. The center teeth 50'are alsobolted to this bar, asshown. The ends of the-bar 54 have bolted'thereto bifurcated brackets55, which are formed with vertically alined sockets 56,/which receiveextensions 57 of a bearing 58, said bearing being hollow at its upperend to receive a cranked spindle 59.` The bearing 58 is pinned at 58tothe spindle 59, so that the two elements may turn together. 4Extendinginto the bearing 58-bel0w the spindle 59 and through a journal box 60connected to the bearing'58; is a stub shaft 61 onjwhich is carried asupporting wheel 62. 'It is to be keptin mind that there are twoof thesewheels for supporting the rake head and that each of them is identicallymounted and connected to the frame bar 54. Furthermore, these wheels are^disposed outside of the longitudinal members' 45.

The rake head also includes the usual back member comprising spacedslats 63 bolted to. spaced uprights 64, which in turn are secured to theforward transverse bar 49 and braced by braces 65 secured to therearward trans- 'verse bar 47. (See Figures 2.and 3).

The connection of the supporting wheels 62to the steering means of thetractor will .next be described. SeeFigures 1, 2 and 3. The spindlesy 59of the rake head .wheels 62 are provided with rigidly connected,forwardly extending-arms 66, which are tied together at their front endsby a rigid,l transverse tie rod 67. Centrally secured-to'this 4o tie rodisan arch or bail 68. Each frame bar 48 is provided with bearings 69 'inwhich is rockably carried an upright U-shaped cranked control member70,'the .forward arm of each being pivotally connected by links 71 45.to the-bail 68.` The rearward arms of these U-shaped cranks areconnected by 4links 72 to a center bar 73. See also Figures 14 and 15.This center bar carries a headed bolt 7 4,-its shank fittingthe `slot,38 in thearm- 37, which, 50 it will be remembered, swings upon 'turningmovement of the tractor steering spindle 21. The center bar 73, it iisto 4be seen, is sand# wiched between the two arms 37 and 34. A hole 75is formed in the center bar 73, said hole receiving the bolt of thesecuring fmem ber 39. In' lthis fashion the center'bar 73 is detachablyconnected to the arms 34 and 37 y From so much of the description it isclear i now that the rake head is self-supportedby means of the wheels62 and that these wheels are articulated with the steering spindle 21 ofthe tractor, and, lastly, that the rake head. is also detachablyconnected, by means of the chains 51,v to the front bolster 19 of the *5tractor.

' rake head, (see -Figure- 3),

each of these castings .-91 receive the extensions "passed through thecasting The rear end connection of the sweep rake to the tractorwillnext be describe'd. See Figures 1, 2, 4, 5, 6, 7, 8, 10, 11, 12 and 13.As shown in these drawingsfeach bracket41 of the draft bar 40 has boltedthereto, the

'.-flange of an upright casting 76, the upper endof which is arcuate inshape. Each of these castings has a hole 77 centrally formed therein, atransverse rock pipe or shaft 7 8.- See Figures 7 and 8. Encircling thisshaft is a second pipe shaft 79, the .ends of which stop short of thecasting permitting room for the securement, by

means of U-bolts 80, of upwardly extending arms 81. The upper free endsof these arms are bifurcated to receive, means of" spring lock bolts 82,forwardly extending adjusting members 8 3 and 84, the

-member 83 being pivotally connected to one of' th uprights for thebackboardof the said member 83 1, a rear link comprising, as shown inFigure detachably, by f which holes function as bearings for 76, for thepurpose of corresponding with the link 84 on'the oppo- 'site side lofthe machine, anda front link corresponding with the link 84 also o theopposite side of the machine, said connection 83 having" its constituentparts carried on a short lever pivotedon the left handframe member 45,and the other member 84 being pivotally connected to a hand lever 85fulcrumed on the side frame member-45 (see f Figure`2).v

Sligh ly spaced inwardly from the arms 81,the pipe shaft7 9 has securedtheretoA by U-bolts 86, a pair of relatively shorter arms 87, which armshave integrally formed therewith, lateral, bored-out extensions 88,which abut, but are not connected to, the arcuate side castings-76. Theupper forward end of 76'is formed with a presently to appear.

hole 89 fora purposeA the side frames 45 of the rake are pivotallyconnected, as will now be described. Th rearen-d ofeach side frame 45(see Figures 10,11, 12 and 13) has bolted thereto a casting 90,-havinga. U-shaped socket4 91, which is centrally and vertically slotted at 92.(See Figure 6.) The rear, upper end of It can now be. seen that the 76,by means of a spring The extensions 88 form a bearing to which each ofthese castings .carriesa pivot pin 93,v to which is 'pivotallyconnected, a latch 94.

' of the power take-oil'I shaft 32 of the tractor.

'member 84. Extending -(see Figures 2 and 3').

As has already been mentioned, the right hand frame bar 45 pivotallycarries -a hand lever to which is connected the adjusting forwardly ofthis lever is a` continuation 84 of the member 84,

said continuing portion lbeing connected to one of the right' handbackboard supports 64 Forwardly of the lever 85 theframe member 45carries a tripod support 103, to the upper end of which is pivotallyconnected a double arm 104 having a stop 105, there being another arm106pivotcd in the arm 104 and to the hand lever 85. These two arms 104 Vand106 thus form a toggle link. The arm 106 is extended rearwardly toterminate in a foot engaging treadle 107. (See Figure 4.) 85 and arm 106are additionally supported by a link 108 connected with the lever 85, asshown, and the frame 45. j

From this detailed description itis now seen that the rake head ispivotallyconnected to the frame bars 45 at 46, and, as a result, saidrake vhead vmay rock and be rocked on y the axis of its supportingwheels Furt-herlnore,A it should be kept in mind that these framemembers 45 are .connected to the short arms 87 fast on the outer pipeshaft 7 9 to rock therewith; and, that the adjusting links 83,

.84, 84, are connected to the rake head backboard and to the long arms81 fast on the inner ii' e shaft 78 to rock therewith.

The use and operation of the sweep rake of this invention, will now be'described. First, it is necessaryto attachthe sweep rake to the tractor;The tractor will be run between the si'de frames 4 5, the rear ends ofwhich will be -,detachably connected-to the extensions 88 i as by meansofthe latch 94 `and springl bolt 95. It is to be understood-that theshaft structure 78, 79, their arms 8l, 87, and lever 100, with castings76 may remain on the tractor rear axle structure independently of thesweep rake attachment. Next, the adjusting members .83 and `8,4 will beconnected, detachably, to the arms 81 by means of the spring bolts 82.The links '72 are then picked up with the center piece 73, which lattermember is detachably secured to the arms 34 and 37 of thevertical'steering spindle 21 of the tractor, as has been described.Lastly, thechains 51 are detachably secured to the brackets 52 of thetractor bolster' 19. The sweep rake attachment has now been associatedwith the 'tractor in position for operation.

` Let vus (assuirfe that the sweep vrake is inl position to sweep awindrow.` The rake teeth will bein ground engaging position, asindicated in the dash lines in Figure r2. The lever 85 will be swungforwardly and the toggle 104,106 will `be broken, as indicated.

The hand lever' erally shown in Figure 4 and the positions'ofv the longarms 81 `and the adjusting members 83 and84 connected thereto, and tothe rake head backboard, are shown in detail in Figure 10. Similarly isshown the position of the short arms 87 and the side members 45 in thesame ligure. It is to be recalled that the arms 81 are mounted on theinner pipe shaft 78. In the down position of the rake head, lthe springbolts 96 engage the holes 89 in the castings 76, and, as a result, theside frames 45 are locked against movement with their connectedoutergpipe shaft 79. It can readily be seen now that, as the tractorpushes the sweep rake, the teeth` and, in fact, the entire rake' head,may loatingly bob up and down in accordance with ground irregularities.The rake head will rock about the axis of the supporting wheels 62, suchaction being perniitted by the pivot points 46. During this Ifloating,

action of the rake head, the togglek v 106, 104 willcjack-knife freely.A considerable range-of float .for the rake head is allowed becausevthe'arms81 are substantially spaced V the locked position of the bolts96, which spacing allow's the rake head todrop below a normal level,and, of course, the rake head may lfloat upwardly. a substantialdistance,

Jrearwardly ofthe extensions 88 in because the arms 81 mayswingrearwardly without'interruption to their limit of movenent as generallycontrolled by the interlinked arrangement of the parts.` While the loadis beingfgathered, the operator on his seat 29 of t-he tractor may exertfoot pressure on the treadle 107 to exert a force which will move thelever85 to, move the adjusting niembers 83,- 84', in a manner to pressthe rake teeth to duty onthe ground. Such pressure Nwill be equallyapplied to the` rake head at spaced points, one on each rear sidethereof, as twist can result in the head, and all teethwill equallypressthe ground.

f course, as the tractor and rake traverse the field, Ait becomesnecessary to vsteer these implements. lTurning offthehand wheel 28 bythe operator on the tractor will operate' the gearing 25, 24 and 23, toturn the spindle 21 to angle the wheel truck 22 of the tractor.

The spindle21 will also turn vthe arm 37y ,and center theother o shapedcontrol cranks 7 0, which in turn will act on the arch 68 -to.movedaterally the tie piece 7 3, which will pull on one or will beunderstood. and, as a result, no

the links 7 2 to rock one of the U- rod 67, for the `purpose of anglingthe rake head supporting wheels 62, as will be understood. The chains51, which on the straightaway hang loosely, prevent excessive side swayofy therake head on turns, Whichmight result from the rear connection of-the frames 45'to` the back of the tractor. Positioning of the steeringcontrol members 70 laterally outside of the wheels 62 also isadvantageous, asI

- described, is steered automatically.

tendency to lengtheningor ward movement of the tractor,

'lever 85 has been swung back f rake head, thereby making the steeringcontrol forces are better exerted when turns areinade, and acteiiciently in spite of anytendency toward side sway o t/he rake head.Thus, an operator need concern himself only with the steering ofthetractor, as the sweep rake, through the .connections Fur-` take place inthe thermore, no binding can steering` connections due to any movementbetween the tractor and rake due to rake resistance, because of the factthat the controls are so shortening ofthe steering connections becauseof such tendency is effectively compensated for by the length of thelinks 72.

lVe will now assume that a gathered-and it becomes necessary or raisethe rake hea so that theload may be transported clearV of the ground toa barn or to a stacking machine. f Depending upon load has been.

circumstances, the operator has his choice ofl any one of several meansat his disposal for raising the rake head, to-wit, manually controlledvmeans; means controlled by 'the forwhich wemay call power actuatedmeans; and, lastly, a conjoint action of manual and power controlledmeans.

The manual means will lirstbe described. The operator in nhis seat 29moves the hand lever rearwardly-and, as a result, pulls the adjustingmembers 83, 84, 84', to the rear, with the. arms 81, which, act on therake head` backboard totilt or raise the rake head on the axis of thesupporting wheels 62. After :the

a predetermined distance, the toggle 104, 106 will lock and retain theparts described in their adjusted positions. The load thus raised per-`mits operation of the tractor for transporting the load to the stackingmachine. v

For' making this step 'of the sweeping operation easier, it ispreferable to utili-ze the forward motion of the tractor, plus theresistance of the load, for effecting a lift of the this operationautomatic without any expenditure of physical energy 'on the operatorspart. In this step, the tractor is kept in motion with the load gatheredon the rake head, which is still in ground vcontacting position. Theoperator, with his foot, kicks the trip lever 100 laterally,"whichreleases the spring bolts 96 from the holes 89 in the castings 76. As aresult, there is possible a relative or differential .movement betweenthe rake and the tractor,

the latter traveling ahead, and the former in effect, momentarilystanding still, because the rake head/ is in engagement with the ground.Thus, both pipe shafts 7 8 and 79 and the arms 81, 87, carried therebyrock rearwardly from the position shown in Figin Figure 11. This acure10 to that shown follows: The movement tion specifically is asdifferential far to the outside and vany to elevate I starts from theshowingA in Figure' 10, with l the arms 81, 87, in extreme forwardposition. The members 45 move back, pushing the. arms 87 rearwardly. iThe members 83', 84'push the .arms 81 rearwardly, butslower than thearms 87, in such a manner that the extensions 88 of the arms 87 catch upwith thearms-81, as shownin Figure`12. Thus, the extensions 88 pick upthe arms 81 and accelerate their .rearward movement to "complete thelift of the rake head to the inalextreme position shown in Figure 11,This lifting equally applied to the spaced points at 46 on the rakehead, resulting in an even lift thereof without developing torque. Itnow v is clear that theload 1s raised by a utilization of the actionbetween the -force of forward movement of the tractor and the force yofresistance oeredbv the load. Thus, the rake head is raised to the fullline position of the' parts shown in Figure 2, with the toggle 104,

106, again locking the parts in adjusted position. f

- lVhen the load stacker, the foot the toggle, whereupon the rake bygravity to the ground, and then, by abacking movement of the tractor,the loadinay be dumped onto the ground, .or may be transtreadle'107 isused yto'break ferred to the stacker in the customary mancontrol andconnections may remain in place on the rear axle' structure, -as hasbeen stated. A mower may then be coupled to the draft bar 40 and bedriven lfrom'the power take-off shaft 32, this being permittedv by thebow in the link 99.

From theabove detailed disclosure it must lnow be appreciated that thisinvention achieves .all of the desirable objects heretofore recited.a'nd that the same is simple, yet. dependable in action, that anythingwill get out of order.

Itis the intention head falls with no great likelihood has beentransported to the locked automatical-l ready for j tovcover all suchchanges j and modifications which do not'depart from the spirit andscope of this invention, as 1s indicated in thesubjoined claims.

What is claimed as new is:

1. lrBhe combination with a tractor,

permitting a differential movement between the tractor and implement,ment on the implement, and by said differential movement for `adjustingsaid adjustable element.

2. The combination with La tractor, of a sweep rake, lconnecting means,said means an adjustable elemeans controlled of 'an implement, connectmgmeans, said means,-

permitting .a differential lmovement between the tractor and sweep rake,an adjustable rake head included in the sweep rake, and means ing 'anadjustable rake head disposed forwardly of the tractor, meansconnecting-the j rake head to the rear axlestructure, said meanspermittinga slight relative displacement between the tractor and sweeprake, and means operable by lsuch displacement for adjusting the rakehead.

5. The combination with artract'or having a ing an adjustable rake headdisposed forwardly ofthe tractor, movable means conneting the rake headtothe rear'axle structure, means normally holding said vmeans againstmovement, and means for releasing whereby a differential movementbetween the rake andv tractor is j permitted, saidl movement acting to,adjust the rake head.

6. The combination with a tractor having arear axlev structure, of asweep rake including an adjustable rake'head disposed forwardly of thetractor, a rockable member carried by the rear axle structure, means connecting t ber, said .means permitting a differential movement betweenthe tractor and rake to adjust ,said rake head.

7. The combination with Y j,

rake connected thereto to"l J -&pushedr there the sweepl rake,iandmeans'carriedv on the tractor for permitting the forceof forward so'automaticadjustment of said head.

movement of the tractorto act against the force of-resistance of therake head to effect 8. The combination with a tractor, of a swee th ed.,in the sweep rake, and means utilizing ried by the the vresistanceofthe load on the head upon forward movement of the tractor to raisesaid head by tilt-ing the same upwardly .around j the axis of rits wheelsupports.-

connecting said members 'to the rake head,

said rockable members being operated/ by 1 ing actuated by the movementa rear axle structure, of a sweep rake includrear axleystructure, of`asweep rake in clud-r e rake head to said rockable mema tractor, of a y,an adjustable rake head included in rake connected thereto to be pushed.ere y, a wheel supported rake head includ` connecting the shaft and rakeheadto permit nected to the tractor to be a rear axle structure, of asweep rake including an 'adjustable rake head disposed forwardly of thetractor, a plurality of rockable members carried by the rear axle struc-Lture, anda plurality of rigid connecting members between the rake headand rockable members for adjust-ing said rake head.

11. The combination witha tractor having arear axle structure, of asweep rake including an adjustable rake, head disposed forwardly of thetractor, a rockable shaft carried by therear axlel structure, an armfast on the rockable shaft, a connection from the rake head. to saidarm, said members beof they tractor' t to adjust'saidrake head. j N

12. The combination with a tractor having ing an adj ustable' rake headdisposed forwardly of the tractor, rockable shafts carried by the rearaxle structure, arms fast on the sha ts, connections between the armsand, rake head, said shafts, arms and connections being operable by themovement of th tractor to adjust said rake head. Y

r13.l The combination with a tractor having a rear axle structure, o f asweep rake including an adjustable rake head disposed forwardly of thetractor, a rockable shaftcarried by the rear axle structure, an arm faston the shaft, a connection from the rake'head tof said arm, means forlocking said shaft against 100 rockingmovement, and means for releasing,said locking means to permit the movement of the tractor to actuate theshaft, arms and connection to adjust the rake head.

Y14. The combination with a tractor yhaving a rear axle structure, of asweep rake includj ing an adjustable 'rake head disposed for- M wardlyof the tractor, ro'ckable shafts carried by the reara'xle structure,arms fast on the. shafts, connections frornthe rake head to the i arms,means for locking one. of said shafts sweep'rake connected to thetractor to 'bek pushed'therehy,'a rake head-for the rake, al

rock sha-fticarried by thetractor; and means the latter floatinglytoContact the ground. 1 f 16. The combination with a tractor having a rearaxle structure, of a sweep rake conpushed thereby, a Take head for therake, a rock! shaft carried by the rear axle structure, and meanseonnecta ing the shaft and rake head to permit the lat; ter floatinglyto contact the ground. v

17. The combination fwith'a tractor, of a sweep rake including a rakehead carried -onr 139 wheels, a rocliable member carried on-the tractorat its rear, said rake connected to said rock member by adjustingmembers connected at spaced points tending along the sides of thetractor and con,-

nected to the rock member for evenly applyin g pressure or liftinglforces to the rake head.

18. The combination with a tractor having rockable means carried thereonat its rear, of

lo a. sweep rake having anfadjlfxsting member arranged along each sideof the tract-or and connected to the roekable means, and a Wheelsnpported rake head in front ofthe tractor and connected to saidadjusting manner to permit an even application of force to the rake headin pressing the same on the ground. or whenvlifting the same.

19. T he combination with atractor, of a sweep rake connected to thetractor to be 2o pushed thereby, an adjustable rake head for carriedbjvthe tract.

the rake, a rock shaft carried by the tractor,

necting the arms and rake head, a second rock shaft, arms thereon, meanslconnecting said arms to the rake head, and means for` locking thesecond shaft against rocking movement to hold the rake head in groundengaging position, said irstsliaft being freely rockable to permit therake head ioatingly to contact the ground. j

2l. The combination with a tractor, of a sweep rake comprising framemembers, a'

rake head pivoted to the frame members, 4a shaft 'carried rockably onthe tractor, connections from the rake head to the` .rock

and a second said sweep rake frame members being 4connected thereto. l iil' The combination with a tractor, of a sweep rake comprising framevmembers, ya rake head pivoted to the frame members, arock shaft carriedby the` tractor, arms on the shaft, connections from the arms to therake head, a second rock shaft carried onthe tractor, and arms thereon'lconnected to the rake frame'members.

23. The combination with a tractor,` of a' sweep rake comprising framemembers, a rake head pivoted tothe frame members, a shaft carried by thetractor, arms on the shaft, connections from the rake head i' nected tothe said arms, a second shaft on the tractor, and arms thereon, saidyrake frame to the rake head and exmembers in a 2O. Thefcombination W1tha tractor, of aV front bolster and a rear sha-ft, rock shaftcarrie'd bythe tractor,

detachably con-- sweep rake comprising a rake. head, a shaft carried by`the tractor,

members being detachably connected to said last mentioned arms.

24.' The combination with a tractor, of'a sweep rake'including Aframemembers and a rake head pivoted thereto, means connecting the framemembers manner permitting a differential movement between the tractorand Vrake to raise the rake head, and means for locking `the rake headin its raised position.

25. The combination with a tractor, of a sweep rake adapted to be pushedthereby comprising a frame and a-pivoted rake head, means for connecting'said frame to the rear of the. tractor ila-a manner permitting'a.differential movement between the tractor and rake to raise the rakehead, and `means located on saidrake frame for retaining the rake headin its raised position.

26. The combinationiwith a tractor, lof a sweep rake adapted to bepushed thereby comprising a framefand a 4ivoted rake head, a shaftcarried at the rear of the tractor, means connecting the rake frame to'said shaft, a second shaft carried'atthe rear of the tractor,connections froml said shaft to the rake head, said connectionspermitting the movement of the tractor to raise the rake head, andatoggle to the tractor in a link mechanism on thel rake frame` forretaining the head in raised position.

27. rlhe combination with a tractor-having axle structure, of a sweeprake comprising a frame and pivoted rake head adapted to be pushed bysaid trac-l tor, means for connecting the frame to the rear axlestructure, and iexible means for' connecting the rake head to thebolster.

28. The combination lwith'a tractor having4 Aa front bolster and a rea-raxle structure, of

a sweep rakecomprising a framel and pivoted rake head adapted to bepushed by said tractor, means for detachably connectinglr the andflexible frame 4to the rear axle structure, means for detachablyconnecting opposite lsides of the rake head to opposite sides of saidbolster.

. 29, The 'combination with a tractor having a front bol/ster and -arear axle structure, of a sweep rakeV comprising a pai-r ofy spacedframe members and aipivotcd rake head, said frame members being arrangedon opposite sides of the tractor body and detachably con-v nected tosaid rear axle structure in a mannerto permit the tractor to push therake, and

flexible detachable connections from the rake head to the bolster.

30. Thecombination with attractor, of a sweep rake comprising a frameand awpivoed rake head, a shaft carried at the rear of the tractor,means connecting said frame to said shaft, and means on said frameconnected to adjust the rake head. f

31. The combination With`a tractor, of` a frame and a pivoted sweep'rake comprising a frame and a pivoted rake head; a rock shaft carriedbythe tractor, an arm-on the shaft connected to the frame,-

4a second rock shaft carried by the tractor, an j arm on the secondshaft, and a hand lever on tlie frame having connections with the arm onthe secondshaft and the rake head for adjusting the latter.

33. The combination with a tractor, of a sweep rake comprising a frameand a pivoted rake head, rock shafts carried by the tractor,

.arms on the shafts, said frame being connected to an arm on one of saidshafts, a hand lever on the frame, connections from an arm oil anotherof the shafts to the lever and from the lever to the rake head foradjusting said rake head, and-meansl for locking said lever i' to holdthe rake head in adjusted position.

34. The'combination with a tractor having i .a. rear axle structure anda front steering sol means, of a sweep rake having a wheel `supportedrake head and a frame connected to the rear axle structure, controlmembers for angling the wheel supports yof the rake head,

said memb rs being located on the rake lhead outside said supports, andconnections from l said contg'ol members to the tractor steering means.

35. The combination with a tractor having a steering means, of a 'sweeprake having a rake head'suppogted on wheels anda frame connected to `thetractor to be pushed thereby, means on the rake head outside vthe wheelsfor angling said wheels, and means connecting said means to the tractorsteering means. V36."1`lie cmbination with'a tractor havingv a steeringmeans, `of a sweep rake having a rake head supported on a pair -ofspaced wheels, a frame for the rake connected to the .tractor to bepushed thereby, rockable control members located on the rake head, andmeans connecting said members to the wheels and to the tractor steeringmeans. l i #37.' The combination with atractor having a steering means,of a sweep rake having aA `-rake vhead supported on a palr of spaced.

Wheels, a frame for the rake connected to the tractor to be pushedthereby, a' rockable control member alocated on the rake headoutsideof-each supporting wheel, means connecting said control membersto tle supportingv wheels, and means connecting sai members to thetractor steering means.

control y' an arm movable therewith, of an attachment forthe tractoradapted 'to be pushed thereby, comprising a sweep rake having a rakehead supported on spaced wheels, control members on the rake head forangling said wheels, and means connecting said controly means to the armon the tractorsteering spindle.

41. The combination with a tractor having a front vertical steeringspindle provided with an arm movable therewith, of an attachment an armmovable therewith, of an attacht for the tractor adapted tobe pushedthereby,

comprising a sweep rake having a rake head supported on spacedwheels,control'members rockably mounted on said rakevhea'd outside thesupporting wheels, means connecting said control members to thesupporting wheels, and means detachably connecting said control membersto the arm on thel tractor steering spindle. f 42. An attachment for atractor having a rear aXle structure and a front steering spindlecarrying an arm extension, ysaid attachment comprising a framedetachably Iconnected to the rear axle structure, a rake head supportedon spaced carrying wheels, said rake head being connected to the frameforwardly of the tractor to be pushed thereby,

` means flexibly connecting the rake head to the front of the tractor,control members on the rake head for angling its carrying wheels,

and means detachably connecting said control membersto the arm extensionon the tractor steering spindle.

In testimony whereof I affix my signature. CHARLES VPBLKRSON.K

38. The combination ywith a tractor having a steering means, of a sweeprake having a rake head supported on a pair of spaced wheels,f`a framefor the rake connected to the tractor to be pushedthereby, U-shapedcontrol members rockably `mounted on the rake-

